Efficacy and Safety of Medium and Long-Term Tadalafil Use in Spinal Cord Patients with Erectile Dysfunction
Abstract
INTRODUCTION: The efficacy of phosphodiesterase type 5 inhibitors for a broad spectrum of erectile dysfunction (ED) is largely reported in literature. Data are lacking concerning medium and long-term effects and safety of these treatments. AIM: The aim of this study was to evaluate the efficacy and safety of medium and long-term use of tadalafil in subjects with ED because of spinal cord injury (SCI). METHODS: Phase 1: From March 2003 to March 2007, 103 SCI patients with ED, mean age 39 years, were given 10 mg of tadalafil after a 4-week treatment-free period. For patients with a score lower than 26 in the erectile domain of the International Index of Erectile Function (IIEF15) and with total unsuccessful sexual attempts of more than 25% according to the Sexual Encounter Profile questions 2 and 3 (SEP2-3), the dosage of tadalafil was increased to 20 mg. Phase 2: Only responding patients entered phase 2 where the subjects were evaluated in office visits every 6 months using the IIEF15 questionnaire and a diary reporting the day and time the drug was taken. All final visits were concluded by May 2008. MAIN OUTCOME MEASURES: The improvement of ED was measured using the IIEF15 and the SEP2-3 questions. RESULTS: Twenty-nine patients were excluded from phase 2: Twenty-seven did not respond to the drug and two left the study because of mild drawbacks. During the 6-month follow-up, nine left the study. Sixty-five individuals continued treatment with median follow-up of 33.6 months,…
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